Structural Design Method of Airport Asphalt Pavements Based on Time sharing Cumulation

Abstract:

The conventional design method of airport asphalt pavement doesn’t take seasonal changes and decay characteristic into account, as a result, the linear cumulation based on the structure calculation with each structure layer using a single value of modulus is unreasonable. Therefore, the idea of time sharing cumulation is proposed to design asphalt pavements in different periods by taking the impacts of environmental factors, traffic loads and performance deteriorating on the design of airport asphalt pavement into consideration. Furthermore, based on the principle of time sharing cumulation, they are discussed as well, including modulus prediction models for different materials, design index and standard and performance prediction models to form a completely structural design method of asphalt concrete airport pavements based on time sharing cumulating which overcomes the shortcomings of the conventional method.